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Finding the Fourth Proportional to 2,681.34, 4,020.99 and 925.85

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Solution

The fourth proportional to 2,681.34, 4,020.99 and 925.85 is: 1,388.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,681.34 : 4,020.99 = 925.85 : x
  2. Step 2: Convert to fraction form
    2,681.34/4,020.99 = 925.85/x
  3. Step 3: Cross multiply
    2,681.34x = 4,020.99 × 925.85
  4. Step 4: Simplify right side
    2,681.34x = 3,722,813.49
  5. Step 5: Solve for x
    x = 3,722,813.49/2,681.34
  6. Step 6: Final answer
    x = 1,388.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.